21912320

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1$

素因数の和:110

約数の個数: 144

約数和(自身を含む): 59603040

約数和(自身を除く): 37690720

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 32, 34, 38, 40, 53, 64, 68, 76, 80, 85, 95, 106, 128, 136, 152, 160, 170, 190, 212, 256, 265, 272, 304, 320, 323, 340, 380, 424, 530, 544, 608, 640, 646, 680, 760, 848, 901, 1007, 1060, 1088, 1216, 1280, 1292, 1360, 1520, 1615, 1696, 1802, 2014, 2120, 2176, 2432, 2584, 2720, 3040, 3230, 3392, 3604, 4028, 4240, 4352, 4505, 4864, 5035, 5168, 5440, 6080, 6460, 6784, 7208, 8056, 8480, 9010, 10070, 10336, 10880, 12160, 12920, 13568, 14416, 16112, 16960, 17119, 18020, 20140, 20672, 21760, 24320, 25840, 28832, 32224, 33920, 34238, 36040, 40280, 41344, 51680, 57664, 64448, 67840, 68476, 72080, 80560, 82688, 85595, 103360, 115328, 128896, 136952, 144160, 161120, 171190, 206720, 230656, 257792, 273904, 288320, 322240, 342380, 413440, 547808, 576640, 644480, 684760, 1095616, 1153280, 1288960, 1369520, 2191232, 2739040, 4382464, 5478080, 10956160, 21912320]

約数ペア:

[(1, 21912320), (2, 10956160), (4, 5478080), (5, 4382464), (8, 2739040), (10, 2191232), (16, 1369520), (17, 1288960), (19, 1153280), (20, 1095616), (32, 684760), (34, 644480), (38, 576640), (40, 547808), (53, 413440), (64, 342380), (68, 322240), (76, 288320), (80, 273904), (85, 257792), (95, 230656), (106, 206720), (128, 171190), (136, 161120), (152, 144160), (160, 136952), (170, 128896), (190, 115328), (212, 103360), (256, 85595), (265, 82688), (272, 80560), (304, 72080), (320, 68476), (323, 67840), (340, 64448), (380, 57664), (424, 51680), (530, 41344), (544, 40280), (608, 36040), (640, 34238), (646, 33920), (680, 32224), (760, 28832), (848, 25840), (901, 24320), (1007, 21760), (1060, 20672), (1088, 20140), (1216, 18020), (1280, 17119), (1292, 16960), (1360, 16112), (1520, 14416), (1615, 13568), (1696, 12920), (1802, 12160), (2014, 10880), (2120, 10336), (2176, 10070), (2432, 9010), (2584, 8480), (2720, 8056), (3040, 7208), (3230, 6784), (3392, 6460), (3604, 6080), (4028, 5440), (4240, 5168), (4352, 5035), (4505, 4864)]